DIPOLE WEST (Non-Simultaneous Detonations) is a series of five high explosive experiments conducted by USA Ballistic research Laboratories at the Defence Research Establishment, Suffield, in Alberta, Canada, during the fall of 1974 and spring of 1975. One of the experiments involved detonation of a single 216-pound pentolite charge; the remaining experiments consisted of two 216-pound pentolite charges for each event. The charges were detonated non-simultaneously, with times between detonations of 0, 3, 5, and 10 milliseconds. Purpose of the series was to obtain information on the phenomenology of strong shock on shock, shock on fireball, and fireball flow interactions from the detonation of multiple high explosive charges. Density, particle velocity, stagnation pressure, and overpressure were measured at and near the ground surface as well as at and near the plane midway between charges. Measurment techniques included pressure tranducers and high speed photography. A Mach stem seen between the charges for shots with 0 and 3 millisecond separation times was not observed on the 5 and 10 millisecond shots. Comparisons made with the AFWL HULL hydrodynamic air blast code show good correlation.